Windows Explorer on Windows 7 tries to be intelligent and offers to group the contents of a directory according to certain parameters. A lot of times when it cannot do this, it lumps them in a group named Unspecified. I find this grouping affair very irritating, especially when selecting files using the keyboard.

To turn off Group By completely:

  1. Open any directory in Windows Explorer.
  2. Right-click and choose Group by(None)
  3. Press the Alt key, so that the Explorer menu bar appears and choose ToolsFolder Options.
  4. Go to the View tab and click Apply to Folders. This will apply the Group By setting to all folders.